was palestinian leader yasser arafat poisoned to death? that's what a trio of international teams is looking to find out. arafat's body will be exhumed this week on tuesday eight years after he suddenly died. cnn's frederik pleitgen is following the investigation in ramallah in the west bank. >> the main investigator for the palestinian authority announced the way that this investigation is going to be happening. so what's going to happen is that this coming tuesday the investigators from france, russia, as well as switzerland, are going to open yasser arafat's grave. they are going to take samples from yasser arafat ebody, and then they are going to shut the grave as well. all of this will have big ceremonial character. there will be a religious ceremony when the grave is opened. there will be a military ceremony, and the same is going to be happening when yasser arafat is laid to rest again. the whole thing, they say, is all going to happen in one day, so it won't take very long, but what the palestinian authority has left open is how lo